GLIMPSE II Archive: Infrared Point Sources from the Galactic Plane Survey

Two-epoch observations from September 2005 and April 2006 imaged the central region of the Galaxy. The Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSEII) Archive consists of point sources with a signal-to-noise > 5 in at least one band, provided by the National Aeronautics and Space Administration. Photometric uncertainty is typically less than 0.3 magnitudes.

Use Cases

• Identify and catalog stellar point sources based on infrared signal-to-noise criteria.
• Analyze photometric properties of sources in the Galactic mid-plane across specified longitude and latitude ranges.
• Compare source entries between the less stringent Archive and the more stringent GLIMPSEII Catalog.
• Study temporal changes using two-epoch coverage with observations six months apart.

Strengths

• Photometric uncertainty is typically less than 0.3 magnitudes.
• Two-epoch temporal coverage from September 2005 and April 2006.
• Specific spatial coverage defined by longitude (±10°) and variable latitude bands.
• Point source selection uses a defined signal-to-noise threshold (>5 in at least one band).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Excludes the Galactic center region (l=±1°, b=±0.75°) observed by a separate program.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Observations from the Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSEII) program.

Time Range

September 2005 and April 2006

Freshness

Last updated 2026-03-13 18:47:18.741628; freshness should be verified.

Geography

Central region of the Milky Way Galaxy, with specific longitude and latitude coverage.